always scale to an integer; compensate for fractional image sizes by leaving the fractional scale in the matrix

BUG=skia:
R=reed@google.com

Author: humper@google.com

Review URL: https://codereview.chromium.org/470233002
diff --git a/expectations/gm/ignored-tests.txt b/expectations/gm/ignored-tests.txt
index 8663216..3bbd3b1 100644
--- a/expectations/gm/ignored-tests.txt
+++ b/expectations/gm/ignored-tests.txt
@@ -33,9 +33,30 @@
 ## epoger will rebaseline by 25 Dec 2013
 #gradtext
 
-
 # Extending fontmgr testing
 ## http://skbug.com/2829 : ignoring failures on gradtext GM test
 fontmgr_iter_factory
 fontmgr_iter
 
+# To be rebaselined (fmalita)
+textblob
+
+# reed
+matrixconvolution
+
+#humper: https://codereview.chromium.org/470233002/
+downsamplebitmap_checkerboard_high_512_256
+downsamplebitmap_image_high_mandrill_512.png
+downsamplebitmap_text_high_72.00pt
+filterbitmap_checkerboard_192_192
+filterbitmap_checkerboard_32_2
+filterbitmap_checkerboard_32_32
+filterbitmap_checkerboard_32_8
+filterbitmap_checkerboard_4_4
+filterbitmap_image_mandrill_128.png
+filterbitmap_image_mandrill_16.png
+filterbitmap_image_mandrill_256.png
+filterbitmap_image_mandrill_32.png
+filterbitmap_image_mandrill_64.png
+filterbitmap_text_3.00pt
+filterbitmap_text_7.00pt